defs.h: do not include <signal.h>

* printsiginfo.h: New file.
* Makefile.am (strace_SOURCES): Add it.
* defs.h: Do not include <signal.h>.
(printsiginfo): Remove.
* printsiginfo.c: Include <signal.h> and "printsiginfo.h".
* strace.c: Likewise.
* sigaltstack.c: Include <signal.h>.
* signal.c: Likewise.
* sigreturn.c: Likewise.
* time.c: Likewise.
9 files changed